Flight OddsSFO → STL Southwest Airlines
Southwest Airlines · San Francisco, CA to St. Louis, MO · 342 flights, 2025-07-01 to 2026-06-30 · aggregated across 15 flight numbers
On-time arrival
50%
Median delay
+15 min
90th percentile
+85 min
Cancellation rate
0%
How on-time is Southwest Airlines from SFO to STL?
Across every Southwest Airlines flight number on SFO → STL (342 flights, 2025-07-01 to 2026-06-30), 50% arrived within 15 minutes of schedule. Median arrival delay +15 min; the worst 10% ran +85 min or later. 0% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 172 | 50% |
| 16-30 min | 50 | 15% |
| 31-60 min | 50 | 15% |
| 61-120 min | 54 | 16% |
| 2+ hrs | 15 | 4% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 58% | +25 min |
| 2025-08 | 31 | 74% | +4 min |
| 2025-09 | 30 | 57% | +14 min |
| 2025-10 | 30 | 60% | +17 min |
| 2025-11 | 27 | 26% | +46 min |
| 2025-12 | 29 | 52% | +36 min |
| 2026-01 | 27 | 85% | +2 min |
| 2026-02 | 27 | 59% | +12 min |
| 2026-03 | 27 | 78% | +8 min |
| 2026-04 | 26 | 27% | +55 min |
| 2026-05 | 26 | 8% | +81 min |
| 2026-06 | 30 | 17% | +54 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 52 | 35% |
| Tue | 53 | 64% |
| Wed | 52 | 46% |
| Thu | 50 | 46% |
| Fri | 52 | 46% |
| Sat | 30 | 63% |
| Sun | 52 | 58% |
WN flight numbers on SFO → STL
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…